Low Back/Abs, BUTT

Question 1

PSOAS Major

Answer 1

O- Anterolateral Bodies of T12-L5
TVP’s L1-5
I- Lesser Trochanter, Femur
A- Flexion, Lat Ext ROT thigh @ hip, POSt Pelvic Tilt
N- Lumbar Plexus L1-L3

Question 2

ILIACUS

Answer 2

Internal Ilium, upper 2/3 Iliac Fossa,
AIIS & Sacral Alla
I- Lesser Trochanter, Femur
A- Flex and Lat/Ext ROT
N- Femoral Nerve L2-L3

Question 3

Quadratus Lumborum

Answer 3

O- TVP’s L1- L4 and 12th Rib
I- Posterior Iliac crest & Iliolumbar Ligament
A- Side Flexion, Elevates Pelvis,
Anterior Pelvic tilt, Depresses 12th rib
EXTension, trunk/vertebral column
N- Lumbar Plexus T12- L1

Question 4

Gluteus Maximus

Answer 4

O - Posterior Iliac Crest, Posterolateral Sacrum, Coccyx and Sacrotuberous Ligament.
I- Iliotibial Band + Gluteal Tuberosity, Femur
A- Extends, ABD/ ADD, Post Pelvic Tilt, Lateral ROT of Thigh @ hip joint
N- Inferior Gluteal Nerve

Question 5

Gluteus Medius

Answer 5

O- Ilium infer Iliac crest, btwn Ant /Post Gluteal Lines
I- Greater Trochanter of Femur
A- Abducts, EXTends thigh @ hip
Flexes, Med Rot, Lat/Ext ROT, Anterior AND Posterior Pelvic tilt
N- Superior Gluteal nerve

Question 6

Semimembranosus

Answer 6

O- ISchial Tuberosity
I- Medial condyle, Tibia posterior surface
A- Flexes Leg at knee
EXT thigh @ hip
Posterior Pelvic Tilt
Med Rot leg @ knee J. (when knee flxd)
Nerve- Sciatic nerve (tibial)

Question 7

Semitendinosous

Answer 7

O- Ischial Tuberosity
I- Proximal, medial surface shaft Tibia
A- Flexes Leg at knee
EXT thigh @ hip
Posterior Pelvic Tilt
Med Rot leg @ knee J. (when knee flxd)
N- Sciatic Nerve

Question 8

Biceps Femoris

Answer 8

O- Long Head- Ischial Tuberosity and Sacrotuberous Ligament
Short heard- Lina Aspera and Lateral Supracondylar Ridge Femur
I- Head of Fibula and Lateral Tibial condyle
A- Flexes Leg at knee
EXT thigh @ hip
Posterior Pelvic Tilt
Lat. Rot leg @ knee J. (when knee flxd)
Nerve- Sciatic Nerve (Tibial - Long head - Common Fibular- Short head)

Question 9

Rectus Abdominus

Answer 9

O- Pubic Crest and Symphysis
I- Cartilages, Ribs 5-7 + Xiphoid Process
A- Flexion of trunk/vertebral column,
Posterior pelvic tilt
Compresses Abdominal contents
N- Intercostal nerves Ventral Rami T5-12

Question 10

Adductor Longus

Answer 10

O- Pubis
I- Middle 1/3 Medial Lip of Linea Aspera
A- Adducts, Flexes Thigh @ hip
N- Obturator Nerve

Question 11

Piriformis

Answer 11

O- Anterior sacrum and anterior Surface of Sacrotuberous Ligament
I- Anteromedial surface of
Greater Trochanter of Femur
A- Laterally Rotates thigh @ Hip
N- Nerve to Piriformis
(Lumbosacral Plexus)

Question 12

External Oblique

Answer 12

O- Anterior Portion, Iliac crest,
Crest and tubercle, pubic bone
and abdominal aponeurosis
I- Lower 8 ribs. Ribs #5-12
A- Lateral Flex, Contralateral ROT,
Compression abdominal contents, Flexion and Posterior Pelvic tilt.
N- Intercostal Nerves.
Ventral Rami T7-12

Question 13

Internal Oblique

Answer 13

O- Anterior portion, Iliac crest,
Lateral 2/3rd inguinal ligamentThoracolumbar Fascia
I- Last 3 ribs and abdominal aponeurosis
A- Ispilateral ROT of trunk, Lat. FLEXion,
Compression abdominal contents, Flexion and Posterior Pelvic tilt.,
N- Intercostal Nerve, Ventral Rami T7-L1

Question 14

Tensor Fascia Latae

Answer 14

O- Anterior Superior Iliac Spine,
anterior Iliac Crest
I- Iliotibial Band, 1/3 way down
A- Flexes, abducts, medially ROTates thigh @ Hip
N- Superior Gluteal Nerve

Question 15

Adductor Magnus

Answer 15

O- Pubis and Ischium
I- Linea Aspera, Gluteal tuberosity, Supracondylar Line and Adductor Tubercle of Femur
A- Adducts, Flexes, EXT thigh @ Hip
N- Obturator and Sciatic Nerves